.nav_menu {
  line-height: 40px;
  list-style:none;  
}

#nav_menu a:hover {
background-image:url(../image/listbg.jpg);
color: #FFFFFF;
width:100%;
}
.nav_menu-item:hover {
background-image:url(../image/listbg.jpg);
color: #FFFFFF;
width:100%;
}

.nav_menu-item A{color: #000000;font-size:16px;text-decoration:none;}
.nav_menu-item A:visited {color: #000000;font-size:16px;text-decoration:none;}
.nav_menu-item A:hover {color: #FFFFFF;font-size:16px;text-decoration:none;}

.nav_menu-item-on {background-image:url(../image/listbg.jpg);display:block;}
.nav_menu-item-on A{color: #FFFFFF;font-size:16px;text-decoration:none;}
.nav_menu-item-on A:visited {color: #FFFFFF;font-size:16px;text-decoration:none;}
.nav_menu-item-on A:hover {color: #FFFFFF;font-size:16px;text-decoration:none;}